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Title: Grooved impactor and inertial trap for sampling inhalable particulate matter

Abstract

An inertial trap and grooved impactor for providing a sharp cutoff for particles over 15 microns from entering an inhalable particulate sampler. The impactor head has a tapered surface and is provided with V-shaped grooves. The tapered surface functions for reducing particle blow-off or reentrainment while the grooves prevent particle bounce. Water droplets and any resuspended material over the 15 micron size are collected by the inertial trap and deposited in a reservoir associated with the impactor.

Inventors:
 [1]
  1. Oakland, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865027
Patent Number(s):
US 4452068
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
grooved; impactor; inertial; trap; sampling; inhalable; particulate; matter; providing; sharp; cutoff; particles; 15; microns; entering; sampler; head; tapered; surface; provided; v-shaped; grooves; functions; reducing; particle; blow-off; reentrainment; prevent; bounce; water; droplets; resuspended; material; micron; size; collected; deposited; reservoir; associated; tapered surface; particulate matter; reducing particle; water droplets; micron size; v-shaped grooves; sharp cutoff; inertial trap; grooved impactor; inhalable particulate; v-shaped groove; prevent particle; /73/

Citation Formats

Loo, Billy W. Grooved impactor and inertial trap for sampling inhalable particulate matter. United States: N. p., 1984. Web.
Loo, Billy W. Grooved impactor and inertial trap for sampling inhalable particulate matter. United States.
Loo, Billy W. 1984. "Grooved impactor and inertial trap for sampling inhalable particulate matter". United States. https://www.osti.gov/servlets/purl/865027.
@article{osti_865027,
title = {Grooved impactor and inertial trap for sampling inhalable particulate matter},
author = {Loo, Billy W},
abstractNote = {An inertial trap and grooved impactor for providing a sharp cutoff for particles over 15 microns from entering an inhalable particulate sampler. The impactor head has a tapered surface and is provided with V-shaped grooves. The tapered surface functions for reducing particle blow-off or reentrainment while the grooves prevent particle bounce. Water droplets and any resuspended material over the 15 micron size are collected by the inertial trap and deposited in a reservoir associated with the impactor.},
doi = {},
url = {https://www.osti.gov/biblio/865027}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}